242666653543 has 8 divisors (see below), whose sum is σ = 245651672448. Its totient is φ = 239683094904.

The previous prime is 242666653501. The next prime is 242666653571. The reversal of 242666653543 is 345356666242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242666653543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242666653573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28771 + ... + 697252.

It is an arithmetic number, because the mean of its divisors is an integer number (30706459056).

Almost surely, 2^242666653543 is an apocalyptic number.

242666653543 is a deficient number, since it is larger than the sum of its proper divisors (2985018905).

242666653543 is an equidigital number, since it uses as much as digits as its factorization.

242666653543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730133.

The product of its digits is 18662400, while the sum is 52.

The spelling of 242666653543 in words is "two hundred forty-two billion, six hundred sixty-six million, six hundred fifty-three thousand, five hundred forty-three".